Machine for sawing metal tubing and steel molding.



R; o. BERG.

MACHINE FOR SAWING METAL UBING AND'STEEL MOLDING.- v

APPLICATION FILED SEPT. I5. IQII.

Lgeg., 5 Patented Apr. 9,1918.

.2 SHEETS-SHEET-I.

INVENmR I f7/HA RD Elm I BY f AWORNEY f R. 0. BERG. MACHINE FOR SAWING METAL TUBING AND STEEL MOLDING. APPLICATION FILED sums. 19u. v

192629435., Patented Apr. 9, waa;

2 SHEETS-SHEET 2.

INVENTQR narran erlernte ramena ormoni i RICHARD O. BERG, 0F DETROT, MICIIGAN, ASSTGNOR TO MICHIGAN STEEL TUBE PRODUCTS G0., Ol DETRGIT, MCHIGAN, A CORPORATICN 01?' MICHIGAN.

MACI-IVIN E FOR SAW'ING METAL TUBING AND STEEL MOLDING.

Specification of Letters Patent.

ratentea apr, a, reis..

Application filed September l5, 1917. Serial No. 191,614.

To @ZZ whom t may concern:

Be it known that I RICHARD O. BERG, a citizen of the United tat-es, residing at Detroit, county of Vvayne, State of Michigan, have invented a certain nev7 and useful Improvement in Machines for Savving Metal Tubing' and Steel Molding, and declare the following to be a full, clear, and eXact description of the same, such as will enable others skilled in the art to Which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to machines for sawing niet-al tubing and steel molding, and has for its object a machine i Yith the power, saw and transmission so arranged that the saw may be quickly and easily brought against the Work and the entire outfit may be run around to places Where it is needed by reason of the stacking of the tubing.

in the drawings,-

Figure l is a side elevation of the truck carrying the Saw.

F ig. 2 is a top plan View of the same.

Fig. 8 is a rear elevation.

Fig. l is a perspective of the tiltable saW- carrier.

Tn the manufacture of tubing the same is piled in stacks of tubes of considerable length. Tt is desirable to saw these up in conrenient lengths for either handling or forming into the uses for Which the tubing is intended. Tnasmuch as this long tubing is very heavy it is desirable to have the means for sawing it close at hand. To afford this means I have designed a saw to which the power, the transmission and the saw itself are arranged so that they can not only be conveniently carried upon a truck but the saw is tiltable against the Work.

a is a truck which is provided With upstanding lugs Z) Where are journaled the truck Wheels c, c at the front and a pair of lugs (Z, Z Which journal the single truck Wheel e at the bacl This truck is provided with uprights at the rear and front desigV- nated 7 Which supports a bed g over which the tubing z' is drawn, laid and measured oli". The angle iron guide j is bolted to the top of the bed and the tubing z' can be laid against this angle iron guide. When the proper length has been measured off, the saw 7c may be brought into contact Withfthe tubing by the operator pressing down on the pedal lever m Which is attached to the yoke-like saw-carrier n (shown in perspective, Fig. l). This upper end is in the form of a block forming a journal for the saiv shaft a. The yoke-like construction of this saw-carrier has a very important relation to the other parts for it allows the sawcarrier to be pivoted or have a trunnion connection 0 in the bearings p of the truck. At the same time the yoke bridges the electric motor M so that the armature is practieally co-aXial with the trunnions. `Hence the tilting movement of the saw carrier has no effect upon the power transmitting belt g Which connects the pulley r on the end of the armature with a driven pulley s on the end of the saw-shaft a.

Tnasmuch as the saw is rotating at a very high speed and is cutting metal, numerous sparks are knovvn and a guard is provided for the Workman. This comprises a hood bolted to the top of the saw-carrier by the bolts u and dropping down in front of the saw and provided With a leather Hap o which can drop over the tubing and the guide j so as to guard the ejection of sparks at the side of the saw. The straight surface of the hood drops down to the inside of the angle iron guard w so that in traveling With the tiltable saw-carrier the hood and angle iron guard w coperate together to prevent the throwing of sparks out at the side. is a spring for returning the tiltable saw-carrier to its inactive position when the foot is released from the pedal lever m.

`What I claim is:

l. ln a machine for the purpose specified, the combination of a bed, a tiltable saw-carrier provided With a saw journaled at its.

top, a hood over said saw provided With a depending portion having a leather flap, and means for driving the savv.

2. Tn a machine for the purpose specified, a truck in Which the base is under-hung, lugs upstanding from the base, Wheels journaled in said lugs, trunnion bearings standing up from said base, a yoke having trunnions supported in said bearings and a portion projected out for connection With a foot pedal, a saw and savv shaft journaled lat the top of the yoke, a bed supported on the truck adjacent the top of the yoke, a guide for tubing on said bed toward which the yoke is tiltable, an electric motor under the yoke and bridged thereby, thoailnature shaft of the motor being` (5o-axial with the trunnions of the yoke, and beit connections between the armature shaft and saw shaft.

3. In a machine for the purpose speoied, the combination of a truck including uprights supporting a bed, a yoke pivoted on the truck at the bottom and terminating at the top in a journal block, a saw journaled in said block, a hood supportedl on said block and shielding said saw, a motor supported on the truck under the yoke and having its armature co-aXial With the pivoting of the yoke, and transmission connections between the armature shaft and the saw.

In testimony whereof, I sign this specification.

' BICI-IARD O. BERG.

Genies of this patent may be obtained for ve cents each, by addressing the Gommissioner of Patents,

Washington, D. C. 

